Improvement in base-burning stoves



PATENT OFFICE.

JAMES vSIBEAR, OF PHILADELPHIA, PENNSYLVANIA. Y'

IMPROVEMENT IN BASE-BURNING STOVES.

I Specification forming part of Letters Patent No. 100,335, dated March1, 1870.

I, J AMES SPEAE, of the c1ty and county of Philadelphia and State ofPennsylvania, have invented certain Improvements in Stoves and Heaters,7of which thel following is a specilication:

The nature of my invention consists inthe.

construction and combination of the grate with the fire-pot, so as tomake an opening between the fire-pot and grate through which ,thecinders, slate, and clinkers may be easily removed without any danger ofthe body of fire falling down into the ash-pit.

In all stoves heretofore made Aslate jand clinkers will in time collectabove the grate, obstructing the draft and rendering it necessary forthe grate to be dumped and anew re made.

By my improvement I overcome this diiiculty, and a perpetual fire can bekept going without dumping the grate.

To enable others skilled in the art to make' and .use my invention, Iywill now proceed to describe its construction and operation, referencebeing. had to the accompanying drawings, of which- Figure 1 is anelevation of the outside body. Fig. 2 is a section through the stove.Fig. 3 is a' sectin through fire-pot and grate, in a niodied form. Fig.4 is a plan of the grate. Fig. 5 is a transverse section through grate,showing raised center.

A is the usual outside body of the stove, (see Fig. 1.) l B are thedoors of the ash-pit. C, doors through which the bars are inserted foroperating-the grate and removal ofthe clinkers, I) are doors with micawindows 11,'through which the lire lmay' be seen in the basket-grate E,and also to enable the operator to direct his movements while removingthe clinkers.. In the rear of Fig; 2 are seen two-pairs of smallerdoors, d2, for a similar f purpose of observing the tire, and also forthe removalot` clinkers. rPhe basket-grate E is suspended in thecylinder by a ring at its npper edge. Above it is the fire-brick pot G.

, The coals are fed to the fire by a door above,

or by a reservoir with revolving light outside, as is customary withstoves at present in use and as described in my patent dated July 71868, No. 7 9,696. Beneath the basket-grate E is placed. the grate H,altogether clear from it, at a distance of two orthree inches, thedistance varying according to the size of the coal and diameter of thegrate. The outside of this grate is a circular ring, K, forming part ofthe grate-surface, restingin four guides, K, secured to the cylinder andfree to rotate within them. This ring is somewhat larger than the lowermouth of the fire-pot, and is curved a little upwardA at the edge,sothat the coals and cinders are banked up, -as shown inFig. 3, andthereby prevented from falling out. Inside this ringis a circular grate,H,

having openings for air, and turning on a.

pivot, m', resting on the cross-bar N, which is pivoted to the sides ofthe cylinder, and by means of the arm 'n' the grate H may be dumped.This rotating and dumping movement has been fully described in myprevious patents. Beneaththe grate is a detlector, O, for givingdirection to the falling ashes. F ig.

3 shows a clay .fire-pot, P, within an iron cylinder, the grate beingcarried by arms attached to the outside ot' tire-pot or cylinder. Thedraftpasses' to the ire through the grate H, and also through thecircular space R.

In a stove constructed in this manner, alll the slate and clinkers canbe removed above the grate, and the fire kept in continously.

moved through the opening It, and the lire y' y continuously kept up, asbefore described.

vWhat I claim as my invention, and desire to secure by Letters Patent,is-

l. suspending a grate below Athe, 1ower` mouthof therepot, at 'adistance sufficient to permit'theremoval of slate and clinkers,substantially as herein described.

i 2`. A grate-surface for the coalto rest on l larger than the openingof the cylinder, in combination with the opening R, for thepurposeherein described and specified.

` -J AMES SPEAR.

Witnesses JOHN P. LEY, A. EIGKMEYER.

